//package com.example.demo.security.impl;
//
//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.security.access.SecurityMetadataSource;
//import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
//import org.springframework.security.access.intercept.InterceptorStatusToken;
//import org.springframework.security.authentication.AuthenticationManager;
//import org.springframework.security.web.FilterInvocation;
//import org.springframework.stereotype.Component;
//
//import javax.annotation.PostConstruct;
//import javax.servlet.*;
//import java.io.IOException;
//
///**
// * 该过滤器的主要作用就是通过spring著名的IoC生成securityMetadataSource。
// * securityMetadataSource相当于本包中自定义的MyInvocationSecurityMetadataSourceService。
// * 该MyInvocationSecurityMetadataSourceService的作用提从数据库提取权限和资源，装配到HashMap中，
// * 供Spring Security使用，用于权限校验。
// *
// * @author sparta 11/3/29
// */
//@Component
//public class MySecurityFilter extends AbstractSecurityInterceptor implements Filter {
//    @Autowired
//    private CustomInvocationSecurityMetadataSourceService mySecurityMetadataSource;
//
//    @Autowired
//    private CustomAccessDecisionManager myAccessDecisionManager;
//
//    @Autowired
//    private AuthenticationManager authenticationManager;
//
//    private static final Logger LOGGER = LoggerFactory.getLogger(MySecurityFilter.class);
//
//    @PostConstruct
//    public void init(FilterConfig filterconfig) throws ServletException {
//        super.setAuthenticationManager(authenticationManager);
//        super.setAccessDecisionManager(myAccessDecisionManager);
//        LOGGER.info("filter===========================");
//    }
//
//    @Override
//    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
//            throws IOException, ServletException {
//        FilterInvocation fi = new FilterInvocation(request, response, chain);
//        invoke(fi);
//    }
//
//    public void invoke(FilterInvocation fi) throws IOException, ServletException {
//        LOGGER.info("filter..........................");
//        InterceptorStatusToken token = super.beforeInvocation(fi);
//        try {
//            fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
//        } finally {
//            super.afterInvocation(token, null);
//        }
//
//    }
//
//    @Override
//    public void destroy() {
//        LOGGER.info("filter===========================end");
//    }
//
//    @Override
//    public Class<?> getSecureObjectClass() {
//        return FilterInvocation.class;
//    }
//
//    @Override
//    public SecurityMetadataSource obtainSecurityMetadataSource() {
//        LOGGER.info("obtainSecurityMetadataSource");
//        return this.mySecurityMetadataSource;
//    }
//}
